Reproductive Endocrinology Control Set Pregnancy (hCG) Testing Positive Level / Negative Level 2 X 5 mL
There are two 5-mL dropper bottles in a box: One a hCG urine control positive; the other, hCG urine control negative.
The lids of these dropper bottles are color-coded ? the positive one is red and the negative one is green ? so lab technician does not have to read label to ensure she is using the correct control.

 Brand: Stanbio Laboratory